Burglars attempted a break-in at a software engineer's house in Rohini, North West Delhi.The incident was reported on July 19, around 8 am when the elderly couple, who owned the house, were away visiting their son in Gurgaon.The burglars couldn't find any valuables inside the house, which apparently had no valuable items. The almirahs were untouched.In a strange twist, the burglars left behind a Rs 500 note at the scene before fleeing the house.